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ionization plug 11 is absent, electronic board repeats a procedure of boiler's staring up from the
beginning. There are 2 consecutive start up attempts taken. If both attempts failed, electronic board stops
ignition;
8) Electronic board changes voltage in the modulator coil of gas supply voltage 8. Gas supply regulator
increases gas supply to the burner block up to maximal power in order to quickly warm the water in the
heating system up to the set temperature;
9) Electronic board equals a signal of DHW temperature sensor 10 with a value set by the user by means of
buttons К3 и К4 (see p.
board changes voltage on the gas supply regulator in order to change gas supply to the burner block in
accordance with DHW requirement.
13.4.3 Boiler's operation in combined mode
In this type of mode DHW has a priority over CH. If water flow is absent in the DHW line, a boiler is working in
CH.
If there is water flow in the line DHW, DHW water flow sensor 15 operates. A signal about presence of water
flow in the DHW line is sent to the electronic board (in DHW mode a pump doesn't operate).
If there is termination of water flow in DHW line (signal from DHW water flow sensor 15 is absent) a boiler
enters to the CH mode (electronic board provides voltage to the pump 19 and it starts operating).
14. SEARCH FOR FAILURES AND THEIR ELIMINATION
14.1. Error codes
13.5.
Stoppage of the boiler's operation, caused by the refuse or faulty operation of any of its systems, is accompanied
by an appropriate error code displayed on the boiler's control panel (see p.
detection.
possible reasons and methods of troubleshooting are presented below:
Cod
Failure
e
Defects related to the
01
faulty ignition
Boiler doesn't operate*
, page7). If the difference of set temperatures is more than 1 °С, electronic
3.1
Reason of failure
Failure of gas supply
Failure of ignition plug
Electric circuit of ignition plug is
damaged
Wrong gap between ignition plug and
burner blade
Spark of electrode of ignition plug slips
on the shell of combustion chamber
Ignition plug is contaminated
Failure of ionization plug
Electric circuit of ionization plug is
damaged
Wrong gap between ionization plug and
burner blade
Failure of igniter
Electric circuit of igniter is damaged
Burner block is contaminated
Electric circuits of gas supply regulator
are damaged
Gas supply regulator doesn't work
Failure of thermo relay (normally closed
at temperature up to 95 °С)
3.1
, page.7) which facilitates fault
Troubleshooting
Open shut-off valve on the pipeline
Check pressure in the cylinder (LPG)
Address to gas service
Replace a plug
Check electric circuit and pins
+0,5
Install a gap (5
mm).
Bend a shell of combustion chamber
in the place of ignition plug
installation
Wipe a plug from dust and degrease
Replace a plug
Check electric circuit and pins
+0,5
мм).
Install a gap (3
Replace igniter
Check electric circuit and pins
Clean a burner block
16.1.1
(see p.
, page 32)
Check electric circuit and pins
Replace gas supply regulator
Replace thermo relay
User's manual
Table 4
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